Discovery 200tdi heater control switch

I be needing a heater control switch for a 200tdi discovery approx 1993. It's the four position switch which switches across from AC to heat. Google & ebay has given not joy.

Stamped LEMA 5312 18 CORPO on one side and FIAT 040295079 on the other.

Thanks, have a nice day and pics below

Bump!